japan quake

Expert explains connection between several global earthquakes in 1 day
The Mendocino County quake struck within hours of several major earthquakes worldwide -- including activity in Japan, the Philippines, Papua New Guinea and Venezuela -- raising questions about whether the events are connected. We spoke with a seismic expert to get some answers.
7.2-magnitude earthquake strikes off northern Japan
7.7-magnitude quake strikes off Japan, increasing risk of mega-quake
7.5 earthquake off Japan's northern coast, triggers 2-foot tsunami
Strong quake kills 9, injures more than 760 in Japan
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7.2-magnitude earthquake strikes off northern Japan
7.7-magnitude quake strikes off Japan, increasing risk of mega-quake
7.5 earthquake off Japan's northern coast, triggers 2-foot tsunami
Strong quake kills 9, injures more than 760 in Japan